It is not scientific to say that which food cancer fears the most should be eaten a little every day. Foods usually do not have the effect of treating cancer, and surgery and other therapies are required for treatment after diagnosis. Cancer is a common malignant disease that can be caused by a variety of factors such as heredity, environment, and gene mutation. The main treatment methods after diagnosis include surgery, radiotherapy, chemotherapy, targeted therapy, immunotherapy, etc. After active treatment, a better outcome can be achieved. After active treatment, a better five-year survival rate can be achieved. Food does not have the efficacy of treating cancer, but can only play a role in assisting patients to recover, such as appropriate daily intake of beef, fish and other protein-rich foods; as well as fresh vegetables and fruits, etc., which can strengthen immunity and accelerate the recovery of the disease. Patients diagnosed with cancer should also go to the hospital in a timely manner for formal treatment, rather than believing in rumors.